Carbureter.



L M. KEIZER. GARBURETBR, APPLICATION fumi APR. 12( 1912. 1,1 25,340,Patented fJan. 19, 1915.

z SHEETS-SHEET 1.

hf auf? bil tjehout its mit tito Y il e fuel OFFICE.

Leiris 2r. Kersen, es saisissante, Maestrini;

Speeiflcation of Letters Estant.

. Patented een. 19, 1915.

eppllieston filet?. 3.317111 l, ls'i. Serial No. 5590.499.

To 'all whom it may conce-m Y rlle it knoiyn that l. Lewis li/i.lstiges, a

, eitizenoii the Unite@ Fitates of inerzea, re-

'sdilis atl 'the @its ef ste-@nete Seite 0f 5 Maryland, have inxentelCertain new anti HS-'ill improvements is erbureters Gf .which tollowingis a specification.;

l In `Jnyp1te-vious applcations, Serial Nos.

61D 5&2 and h .s have described a cer- ,eter in Lwhich there is a.swinging; or retoting air life preferably in the'forin ont a barrelyalye, .angl a fuel lnos-'file discharging' niithinthe losrrel valyeand.A controlled by means of ,a neeglle taire.. .Means pro- ).5lvicl'ed'for opening and closing he air valve smiths-fuelValve, anal it.-tl purpose of 4varying the relatire onenii l Lhes@ Valves.

lv .provide a earn and a ollo :er l

4 cani connectetl to the barrel aire .to nofethere zowith and to.tl'ienel'valye to actuate it.. in 4the eerbureter shown in. 'thanimations, the esin'is adjustable, that is. it is pivote@ to swing inthe plane of ngotien oi the fuel lval-ye, and means are prf, l l orachustnrs a the throw oi tinge titel Valve l V eis aise acl ,jusllsbl llatiyely to the follower tor the f -Piisess terrine' a r at all D0- isitions of 4the.follower. this is 1n tire V Y nient which eter isy firstPut in f Qpera,,tion finti- "wiitn t change oi 1.,'.Eor start-infr incold ete.. l ncl {leis regulated when the Weather, .Sire le to; rer-y=tiei2e1frfiy the assertion 1 ted to the stemmi .Of eil', e116- t0 e thereunie-.2- TO this end. Iva il the One-eins .di the fuel 'fairerootiyely to ,this air valve end throttle valve.

' inf ediilitns the-Desition of the caln'yangl ming; it bodily in thedi-ectioimzmeiiee si the iv L Yew@- For this purpose l provide a' ai ingthe @Gain which operaie-s venently .est makes-it suisses l turb v-theVpemnanent adjustment o l:he parte to aoeoinplishthis regulation. l alsoiind 1t 'ldesirablmto change the adjustment o' the parte, .to providefor dierence in running conditions du@ lt0 chasse Ofi seasons Forthis';purpose l sary .the timing etti@ cani whereby ,the opening of thefuel valve From its mininnxm position taires place eer. r or later asoonrpnred 4to the opening; er' throttle. and :the relstireniotions r"valyesirfe also Lhengi io' enr vide means for conveniently swinging the@ein anti adjusting it angularly about the harrel'vslye so that itsposition relative to the follower is changed. withoutchangthe positionof the barrel valve.' For .onvenienoe in construction and for otherreasons, incl that it is most desirable to ii's'e a flat cam, e., a camhaving its operative surface in a single'plane. In ordinary usage such acam operates successfully. However, with the arbureter constructed ith,circular ports, it is found that at half t rottle the iiow of gasoleneunder some con- L iitions `tends to be insuliioient. By means of e leadnotch in the throttle opening, I am enabled to increase the area of themixture passage at this time. -Thus the suction about the 'fuelnozzle-is increased and the `richness of the charge at half throttle iscorrespondingly inc-ressei. in this Way the operation at mean throttleis benefited.

in the accoinanying dra-Wing l have shown earhureters embodying thevarious features of any invention in their preferred i .gore lcarbureter constructed 'in accordance with one forni of my invention.Fig. 2 is a i cal Central cross-section of Aanother i ofthe carbnreter.Fig. 3 is a plan of the saine.

The 'earhureter shown in Fig. 1 consists ot casing l' having a centralcylindrical chamber'2` in which is mounted a valve?, which may he of thecylinder or barrel type. The chamber has an outlet i which is Aconnectedto the intake of the cylinder and an inlet 1reierahly, these passagesare of substantially the same area of cross-section throughout thegreater part oit their length out the inlet passage is choked at Gadjasent the chamber reducing,P its area so 'that it is considerablyless than that of the ontlet passage. This is known as the secondairinlet. The choking niay he accomplished by first boring the inletpassage olf a crosse-sectional area equal to that of the choked portionG and then chambering the outer enel of the passage to the area of theoutlet. ln the chelnh'erecl portion 5 of the inlet. as shown, thereis ahood 7 which leads to a passage Slrnown as the primary or constant airpassage which in turn leads to an ular opening 9 .in the bottom of Vthesharnher 2. ,A central upright' l1 within is ai central vertical sectionof asnnisr 'opening 9 pierced vertieally' eretioii is? desribecl iii myprerioes. ep QetiOnseite f lieein.vl` ,s The-operetiongoil A 1 pereiitIfrom this des ,tzr eriio ooe- 5 ymotion u., the stajtementofinvention*v ,a l havedeeeribed in' minutedetail embedimerits of my invention in.@raler that its, nature `and' operation prey lee clearly unf derstoocl.However, `the specilie ,terms here w" in are used iii theirdescriptiverather injtlieir limiting sense angl the scope invention 'isVolf'einerl in the oloimv.

v.lclaino 'v 1-. In va C onstantlevel espirating Carlow lrete'rg a valvechamber, a'lmrrel valve tljzerein hav-ing athrottle'port with e leedrioteli, [a conste-nt air openingaiitlmsecondary air port, e r-'iuel4nozzlefet ueljrelxe and menne for mstuetingg the valves endvaryiiig trelativemotioiiswsuid means. inlufiing a cam lwitlr its operative lleuraeegiii zt single 1. follower to the rotfl-og! r l y open and closeLthe-,se

adjusting it in` the plane .j of the direction of Iriotio'nfofthefuelwelveyfe ollowerfor the cam, and menu seonnectiug ,it to @thefuel:

, 2.--ln o. constan-,t :level: nepi-rating earbudirootiomof motion of,Y. In 1anfesp11-witi1ig xret'er, a rnlve chamber.'` '1: barrel'velvefthere- 305mu constant air, :opening anden ,ziiisporg efuelcno'zzle lin the; constant. wir: opening,

luel ralze and means Y for; aotuatmg 1 the fwa'lres andVva-rying theirmot-ions. relatively, l

said menus being 1n the lormof a stationery '35 fiat camund'a'ifollowenthe latterlconneoted to tlm-.barrel val-retomoieutherewith and .Connected sarnep"r lil .a cerburetegfe valvechamber, a-4 lizirrel Veil-ve thereinfhaving throttle `gooit with a leadnotclokirfconstenter'oeuing,

to the, fuel Y-irlvel to-aotuate l'the .tion of motion of the i tormoving the @am 'bo .diumbelg :ri'otery vali? .and Vim air, port,uelnozzfleliir the oon-f stent `air opening, a fuel valve-m means,

foi; eotuotinggthe.fvalves ,and vary-ing their relative motiongeiflneafsjincliicliug e cmu and means for swinging the same and y lug' or".u, com, follower, meensconnectiil;

adjusting it" in 'the' plne of the direction of motion of the fuelvolvmondfe. follower for the cmu connected to the-barrel valve to movetherewith, und means connecting;v

the follower to the fuel same.

4. n :in aspirating oerbureter, e valve chamber, a rotary air valvetherein, e fuel valve to aotuete the valve, moaned, for opening `andclosing the ,with and. tra lower bemgelso com ySwiriging the een; engl,l

lmlre tof open :rml close v.the `sri-me, ineens 'l throttle port; e fuel:valve :11ml geen eil per? ,engl e e, ma roegms' VAor the :Seel val tevthe of roem a. oilmver7 Co'nneetlijf-et` ollo'o'ez: to the rotary valveto more t 'elise ,the oe lli to open and el rro and meer? Enorme' thelrxf, 77 vthe fuel ruim Lever 6. ln en aspirato l chamber9 a. rotary vethrottle port,V e fuelA f opening and closmg the i A tary `relve islmoved, seit? of e Garn,` e follower.' me' "is corone, tio

e to: more o with miki' traverse the ooreurfeee, tl/ie lower .beingounectec tol i ler positionjin plm' 'throttle port. n luelfielie andrlieensfkjfor opening @mtl :closing ther'luel, valve asi-tile rotaryvalve is moved', said ineaneooiiegiw ing' of fuoaru, i follower-J meansConnection' y the, ollOTWerto, tlie roter i'fgilve therewith andtraverse @le com Ithe follower beingvcomieotetl, to. the

swinging the cmu-end adjusting its en@ positionne n yplane trimsversetothe o1 ozmotion ol? the fuel. r

8.' ,lo anwespiretaiig c opezriogimcl closing' the rotary Valve ismoreel, 9:?

nel Valve eS leales con the follower to tlie'rotor'y ralsfegto moretherewith und. traverse tl'e com su tace, the lr'ollower being comme eflto.' tl' k valve to open and close the, Same; a port oow'nioli the Cemis mimiteulj, the port being pivotecl to swing" on im exis ellel to thatof the rotary Valve, end rneoiis for holding' the support in any desiredposil tion of angular adjustment, whereby the cem muy oe rotated at williu u. plone transverse to the direction of motion of the fuel valve.

open and close the same, a support upon which the cam is mounted, thesupport be .In ivoted on an axis transverse to the direction of motionof the fuelvalve, so that the support may be rotated in the plane of thedirectionl of motion of the fuel valve moving the cam bodily in thedirection of motion of the fuel valve, and means for holding the supportin the desired position of adjustment about the said axis.

10. In an aspiratin carbureter, a valve chamber, a rotarv va ve thereinhaving a. throttle port, a fuel valve and means for opening and closingtheI fuel valve as the rotary valve is moved, said means consisting of acam, a follower, means connectin the follower to the rotary valve'tomove t ere with and traverse the cam surface, the follower beingconnected to the fuel valve to open and close the same, a support uponwhich the cam is mounted, the support being pivoted to swing about anaxis arallel to the axis of the rotary valve, an means for holding thesu port in an desired position of angular adjustment a out said axis,the support' also being pivoted on an axis transverse the direction ofmotion' of the fuel valve to swing in the direction of such motion.

l1. In van aspirating carbureter, a valve chamber, a throttle valvetherein having a throttle port, a fuelv valve and means for opening andclosing the fuel valve as the throttle valve is moved, said meansconsisting of a cam, a follower, means connecting the'follower to thethrottle valve to move therewith and traverse the cam surface, the

follower being` connected to the fuel valve to open and close the saine,a support upon which the cam is pivotally mounted to swing in the )laneof the direction of motion of the fuel valve, and means holding the camin the desired position of adjustment, the support being pivoted toswing in a plane transverse to the direction of motion of the fuel valveand means for holding the sup# port in the desired position of angularadjustment.

12. In an aspirating carl'iureter, a valve chamber, a throttle valvetherein, a fuel valve and means for opening and closing the fuel valveas the rotary valve is moved, said means consistin of a cam, a follower,means connectin the ollower to the throttle valve to move t erewith andtraverse the cam surface, the follower being connected to the fuel valveto open and close the same, a support upon which the cam is pivotallymounted to swing relatively to the support in the plane of the directionof motion of the fuel valve, andmeans for holding the cam in the desiredposition of adjustment, the support being pivoted on an axis transverseto the direction of motion of the fuel valve so that it may be vrotatedto move the cam in the direction of motion of the fuel valve, and meansfor holdin the support in the desired position of a justment about saidaxis.

13. In an aspirating carbureter, a throttle valve, a fuel valve, meansconnecting the same to move together, means for ad'usting said means tovary the lead of the fuel valve, and to vary tem orarily by a fixediamount the opening of t e fuel valve as related to that of the throttleat all ositions.

14. In an aspirating car ureter, a throttle V valve, a fuel valve, meansfor connecting the same to move together, means for adjusting said meansto vary'the lead of the fuel valve and to vary temporaril by a fixedamount the opening of the fue valve as related to that of the throttlevalve at all positions, and means for varying the relative motions ofthe valves.

15. In an aspirating carbureter, a throttle valve, a fuel valve, meansconnecting the same to move together, means for adjusting said means tovary the lead of the fuel valve and to'vary by a fixed amount theopening of the fuel valve as releated to that of-the throttle valve atall positions, and means for varying temporarily the timing of therelative motions. i

Signed by me at Baltimore, Maryland, this 11th day of April 1919.

Lewis M. KEIZER.

Witnesses:

EDWARD L. BAsH, 'n EDWIN It SAMUELB.

